Photographic cameras fitted with focal plane shutter



Aug. 27, 1963 s. BHM r-:TAL 3,101,657

PHOTOGRAPHIC CAMERAS FITTED WITH FOCAL PLANE SHUTTER Filed Sept. 19,1957 7 Sheets-Sheet 1 2 32 31 Y FIC@l l 54 3 28 0 33 7 Z9 79 i4 23 77 z73 5B 37 47 ,.9 5'0 fo 47 47 1o 44 67 74 e? 86 3 A ai \X 3|/ il: 3o 'n JI i l'! l y Il 1 l l [I g N l I I v I i A. IH 1: im A Il f I I I l IMX lL l kMlyliX Y 'I' 1+ 5 96 97 9s 99 400 l 85 104 7 e FIC.2

Aug. 27, 1963 s. BHM ET Al.A 3,101,657

PHOTOGRAPHIC CAMERAS FITTED WITH FOCAL PLANE SHUTTER Filed Sept. 19,195'? 7 Sheets-Sheet 2 INVENTOR.

JIP f/fed @Mm BY Drei/JAA WA? MN Hanf IY/ Aug, 27, 1963 s. BHM ETAL3,101,657

PHOTOGRAPHIC CAMERAS FITTED WITH FOCAL PLANE SHUTTER Filed Sept. 19,1957 '7 Sheets-Sheet 5 90 89 88 'f1 73 65 FIC 8 1 427 w 76 86 Aug. 27,1963 s. BHM ET AL PHOTOGRAPI-IIC CAMERAS FITTED WITH FOCAL PLANE SHUTTERFiled Sept. 19, 1957 7 Sheets-Sheet 4 r 405 '114 407 40g 3 412 143 10e 1FFC. 42,

FIC 15 Aug. 27, 1963 s. BHM ET AL PHOTOGRAPHIC CAMERAS FITTED WITH FOCALPLANE SHUTTER Filed Sept. 19, 1957 '7 Sheets-Sheet 5 FIC. 15

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A111127, 1963 SBHM Em 3,101,657

PHOTOGRAPHIC CAMERAS FITTED WITH FOCAL PLANE SHUTTER Filed Sept. 19,1957 7 Sheets-Sheet 6 FIC. 16

Aug. 27, 1963 SQBHM Em 3,101,657

PHOTOGRAPHIC CAMERAS FITTED WITH FOCAL PLANE SHUTTER Filed Sept. 19,1957 7 Sheets-Sheet '7 727 IZIS 7/25 726 728 724 722 Awww 1 Z2 1z0 5 1o15 729 77 FIC.18

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United States Patent O 3,101,657 PHO'FGRAPHIC CAMERAS FHTTED WlllH FCALPLANE SHUTTER Siegfried Bhm, Friedrich Winkler, and Horst Fischer,

Dresden, Germany, assignors to VEB Kameraund Kinovverke Bresden FiledSept. 19, 1957, Ser. No. 684,874 Claims. (Ci. SiS-42) This inventionrelates to a photographic camera fitted with a focal plane shutter.

'Ihe invention consists chieliy in the particular arrangement,construction and operation of the driving gear of the shutter inconnection with the adjusting and regulating of exposure time of theshutter. Furthermore, means are provided which When a reflex device isused in conjunction with a lens having a semior fully automaticself-bedding diaphragm, the `means effect automatic movement of themirror into and out of reflex position and automatic control of theself-bedding diaphragm of the lens. rflhe time during which theseoperations occur can be influenced, moreover, by additional delayedaction release means.

In known photographic cameras equipped with a focal plane shutter thedriving gear for the film-feed and shutter and the arrangements foradjusting and regulating exposure time are as a rule disposed on oneside of the camera in the space above the take-up spool. As this spaceis quite small, it is necessary to place the various gears and devicesconcerned Within and above one another with the result that thestructure is not clearly arranged, complicated and its over-all heightis considerable.

Another disadvantage is that actuation and adjustment of the differentdevices, like the shutter Winding gear and film-feed mechanism, obstructthe exposure-time setting means and counter during operation and areaccessible only vvith difliculty. This applies particularly to cameras,in which optical measuring and finder systems or reflex arrangements areused, since such laterally available space even more.

The invention proposes to avoid these disadvantages by arranging thedriving gear for the shutter and film-feed mechanism on one side of thecamera, preferably Within the space above the take-up spool, and byarranging separately therefrom the means for adjusting and regulatingexposure time, preferably in the space over the film unwinding spool onthe other side of the camera. This arrangement ensures low over-allheight and easy access to the shutter setter and film-feed mechanism asWell as to the exposure adjusting and regulating means.

It affords the added Iadvantage that the gears and their parts can be ofsturdy make, which has a favorable effect upon proper functioning andmanufacture and permits also the provision of measuring, finder andreflex devices with large cut-outs. Connection between the shutter gearand the exposure adjusting and regulating means is established by aplurality of members one of which regulates the shutter motion inconnection with the exposure adjusting means and is so constructed so asto have a regulating effect due to its mass and inertia. The constanteffect obtained thereby considerably reduces scattering of the exposuretime relative to the adjusted time values.

As stated before, means are provided which when a reilex device and alens having a semior fully automatic self-bedding diaphragm are usedeffect automatic movement of the mirror into and out of reflex positionand automatic control of the self-bedding diaphragm of the lens. Thetime during which these operations occur can be inuenced by anadditionally provided delayed action device. The mode of operation ofthis device according to parts restrict the the invention is such thatafter the release thereof the v member eecting release of the shutter,mirror and selfbedding lens diaphragm releases a brake mechanismregulating the duration of release, but remains itself inoperative untilthe brake mechanism on running off releases it. Owing to thisarrangement and operation in connection with the delayed-action device,reliable control of the releasing operation for short and long timeintervals is attained.

According to the invention, the entire drive of the camera, as forinstance the shutter gear and shutter setter, the film-feed mechanism,the arrangements for adjusting and regulating exposure time and ifnecessary the reflex outt and the means for releasing the self-beddinglens diaphragm and the delayed-action device, are together disposed on acommon carrier inserted with this load in the camera body and heldtherein by preferably detachable connections. The use of the carrieraffords the great advantage that both the mounting of the entire driveof the camera and setting of the various controls can be performedoutside the camera casing, and any repair Work thereby is simplified.

The invention provides also a locking mechanism which has the effectthat the `common drive for shutter, lrnfeed, vmirror and lens releasecan be actuated only when the shutter is run down `and remains lockeduntil the next release occurs.

According to the invention, the locking mechanism chiefly comprises alever formed as a locking member and projecting with its locking faceinto the range of motion of a hand lever constructed as high-speedsetter and thereby releasing and locking its motion. The lever formed asa locking member is controlled by and dependent upon the lever lockingand releasing the running of the shutter and actuated by the reflexmirror at the end of its motion. In this Way operation of the drivinggear is initiated and possible only after all other functions of thecamera have been performed and the setting of the gear remains lockeduntil the next release and subsequent running of the driving gear. Thismode of operation, as each setting is followed by a release, preventsthe production of blanks and also the possibility of gear troubles dueto premature Winding if carried out prior to the performance of allfunctions.

The invention is illustrated by Way of example in the accompanyingdrawings showing a photographic camera fitted with focal plane shutterand reflex device, wherein yFIGURE l is a sectional `front view of thecamera and the arrangement of a common carrier for the driving gear ofthe camera;

FIG. 2 is a top -view of the carrier 'with shutter and brake mechanism;

FIGS. 3 to 5 show details of the arrangement and mode of operation ofthe Imeans for regulating shutter times;

FIGS. `6 to 7 show details of the arrangement and mode of operation ofthe setting B-release;

FIGS. yS to 11 are sectional side views of the arrangement and lmode ofoperation of the reflex device with release of the self-beddingdiaphragm;

FIGS. 12 and 13 show the arrangement and mode of operation of thedelayed-action device;

FIG. 14 is a front view, partly in section, of a part of the camera withthe locking means;

FIG. 15 is a top view of FIG. 14 with .details of the locking device;

FIG. 16 is a side View of FIG. 14 with the reflex device in section;

FIG. 17 is la top view of FIG. 15 with set shutter and locked high-speedsetter; and

FIG. 1S is a top view of FIG. 17 when the shutter is run `down and thehigh-speed setter released.

A carrier 2 holding the entire driving ygear of the shutter, thefilm-feed, the reilex arrangement and the delayedf 3 action release isso constructed that together with these drives and devices it can beinserted in a camera body 1 and is held therein -by preferablydetachable connections, asv screws 3. In the camera body 1 lthere =arealso located Va space 4 for a take-up spool 5 and a space 6 for anunwinding spool '7. The shutteris of the focal plane type operating withtwo curtains, one curtain being provided to open the gate for exposurewhile the other curtain closes the gate upon termination of theexposure. Each curtain has a -roller and is driven by gears 8 and 9coax-ially secured to said rollers. rIhe rollers and curtains which arewell-known in the art are not shown.

The two curtain rollers vassociated with gears S and 9 are Ialsojournaled in the carrier 2. The first curtain which, when released,uncovers the picture gate, is driven byv way of the gear 7 by a shutterWheel 1lil rotatably mounted 'on a driving shaft 11. The shutter wheel1t) has an annular recess 12 engaged by a pin 13 of another shutterWheel 14 which is similarly rotatably mounted on 'the shaft 11. TheWheel 14 meshes with the gear 9 Aand said locking lever being moved intolocking position by a spring 13. By means of the locking lever 17 and byway of .the locking cam' 15 the run of the shutter wheel 1i) and therebythe entire driving gear of the shutter is locked or released.

A ratchet `wheel 21 and a pair of lower gear Wheels 22 are iixedlyconnected to a high-speed setting lever 19 by means of a shaft 211.rl`he ratchet wheel 21 cooperates with a pawl 25 `which during windingprevents back sliding of setting lever 19 and will only release the samewhen the shutter has been completely re-set. Gear Wheels 22 drive a gear23 which, by means of shaft 11, is secured to :a driver 24. In thewinding movement, driver 24 takes along the run-down shutter Wheel 10Iby striking against locking cam y and thus drives the entire mechanismto locking position. Simultaneously, the shutter wheel 14 is taken alongsince the pin 13 engages the recess 12 of shutter wheel 10 and thesecond curtain is thereby raised by way of `drive gear 9.

With the high-speed setting lever 19 the nlm-feed is also actuated. Forthis purpose the ratchet Wheel 21 is lalso provided with van annularrecess 26 which is engaged by a pin 27 of the gear wheel 23 arrangedbelow which is rotatable on shaft 20. With the gear wheel V23 gearwheels 29, 311 are connected, the latter driving a gear wheel 31, seeFIGS. l2 and 13.` The gear 31, by means of `a riction clutch 32, takesalong a driver 33 of the take-up spool 5.

The -riction coupling comprises :a spring 32 which isA connected withthe driver 33 so 'as to 'be frictionally l in the gear 31. Gear 31 isdriven by the highspeed setter 19 through the y.gears 28, 29 and 311.The spring 32 surrounds the -hub of the driver 33 of the take-up reel 5.During the winding of the high-speed setter 19, the spring 32 tightensaround the hub of the driver 33 and thusl frictionally engages the`driver 33 toeffect the winding of the iilm. During the return of thehigh-speed setter 19,I

the spring 32 releases the hub of the driver 33. Consequently thetake-up reel is rotated during the winding motions of the/high-speedsetter 19 but does not rotate during its release. Hence the `rictionalengagement of the spring 32 yand the hub of the driver 33 operate as aone-way clutch. O-ther types of known one-way clutches may besubstituted for this particular design.

FIGS. l, 2, 12 and 13 show that the driving gear for shutterv andfilm-feed mechanism lies above space 4 of the spool, and on the otherside of the camera body 1 the means for adjusting yand regulatingexposure time are disposed above spool space 6. Connection between thesearrangements is effected by a control lever 34 movable `about a fulcrum35 and projecting with its bent end 4into the recess of an annularelevation 36 of the shutter wheel 14. With its other end the controllever 34, by means of ya pin 37, engages the subsequently describedmembers of abrake device, which according to their adjustment have aretarding effect and thereby a corresponding influence upon the run ofshutter wheel 14 and thus upon exposure. y

For obtaining long exposure times of, say 1/5 to l second a brake deviceis used comprising a toothed segment 38 and drivers 39, 413and `anchorwheels 411and anchor 42 connected therewith, which is returned toinitial position :by a spring 43. To the toothed segment 38 moving abouta ulcrum 44 a pin 45 is secured against which bears a bell crank lever47 movable about a fulcrum 46, which with its other arm by means' of apin 43 lies against a cam disk 49 iirmly connected with a time settingknob 51 by a shaft 50i. Owing to this `arrangement, the toothed segment33 of the brake device, by means of time setting knob 51 and by way ofcam disk 49 and bell crank lever 47, can be moved more or less orcompletely into and out of the swinging range of connecting lever 34 orits pin 37, whereby the run of the shutter Wheel'14 is correspondinglyinfluenced.

To obtainl shorter exposure times, for instance of I/50 to 1&5 second,the retardation due tol'anchor 42 can be removed and the driving gear`act without retard-ation.

The anchor 42 is therefore movably secured on a onearm lever 52 arrangedabout :a fulcrum 53 yand carrying a pin 54 which bears against a cam`disk 55 firmly con* nected with time setting knob 51 by way of shaftSi?. By the cam disk the correspondingly adjusted `anchor 42 is broughtinto vand out of engagement with the anchor wheel, -a spring 56 movinglever 52 into the anchor engaging position.

To obtain still shorter exposure times of 1/250 to 1600 second, lafterdisconnection of the brake device as described above, a cam disk 57firmly connected with the time setting knob 51 by way lof shaft 50`becomeseiective and ya double-armed short time lever 58 which -abutsagainst Idisc 57 and is arranged about a `fulcrurn 59 is moved by theaction of a spring 6b with its other ann into swinging range of theconnecting lever 34 or its pin 37. At this kas Well as other timeadjustments the connecting lever 34, owing to its long arm and theconsequent moments of mass and inertia, lacts also `as regulator havingVthe advantage of constant operation, whereby the `hitherto unavoidablevariations relative to the `'adjusted time Iare considerably reduced.

In case of exposures of -1/1000 second it is advisable to disconnect:besides all brake ydevices also the connecting lever 34 so ias to beoutside the range of shutter member 14 and ineffective at this setting.The two curtains 'will then roll off without retardation, since theshutter has been released by its own gear.

For B-setting serves the riolliowing arrangement: With the time settingknob 51 is connected also Iby shaft 50 a recessed setting disk 61 whichcooperates with a lbell crank lever 62 disposed about a fulcrunt 63. Toone anm of the bell crank lever 62 ta locking member 64 is secured whichat its other end has a piafwl 65 cooperating fwith' a strap 66 providedon the connecting lever 34.

A releasing' lever 67 bears against a pawl 65 and is tarnanged about arfulcrum 68 and Iby the action of a spring 69 simultaneously moves thelocking member 64 with its pawl 65 tout ofthe range of motion oi thestrap 66, as indicated in FIG. 6. `In B-position the setting disk 61with its recess is so placed that the bell crank lever 62 can drop intothe recess by the action of a spring 70. This movement, however, is Eatiirst prevented by the strong spring 69 of the Yrelease lever 67articulated to tlhe pawl 650i locking member 64. During rele-aseoccurring in the direction shown by the arrow, the releasing lever 67moves to the right so that the articulated locking member 64 due to thebell crank lever 62 and the action of spring 70 can follow. At thismotion the pawl 65 en- Igages the st'nap 66 of the connecting lever 34and locks it so that running-cfr of the :shutter Wheel 14 and therebythat of the second curtain is impeded. Release is effected during thereturn motion of the releasing lever 67.

rIhe shutter gear is driven by mea-ns of the gear Wheel 23 and thegearing comprising two bevel gears 71, 72 and .gear wheels 73, 7 4connected therewith, which are all also arranged on carrier 2. Thisgearing effects the drive of the reflex device and actuation of a lens75 preferably provided twith a semior fully `automatic self-beddingdiaphragm. The rellex device consists of a tension lever 76 placedaround a tiulcnum 77 and moved by a spring 78. The tension lever 76 isin connection at one end with the releasing lever 67 which by means tota catch 79 keeps the tension lever 76 locked in tensioned condition, asindicated in HG. 11. On the other arm of the tension lever `76 apreferably adjustable thrust bolt Sil is provided which acts against apawl 8'1 arranged about a fulcrum 32 and moved each time into lockedposition by -a spring 83. The pawl 811 when in locking position:embraces a similarly preferably adjustable bolt `841 of a mirnor S inits reflex position of 45,l which is movably placed about a fulerum S6and when released is moved upwardly by -aspring 87, as shown in FIGS.Sand 10. To the tension lever 76 a pin 8S is also secured by means ofwhich a lever 9d is actuated, the lever 9d turning about la fulcrum 89and serving for release of the self-bedding diaphragm arrangement of thelens 75. On lever 91) a preferably adjustable thrust bolt 91 is alsoprovided which strikes a pin 92 intended for the release of theself-bedding diaphnagm. On the mirror SS or its bolder a strap 93 islaterally arranged, las shown particularly in FIG. 9, which at releaseof the mirror 85 from its reflex position Istrikes during this movementagainst an incline 9d' forming part of lthe locking lever 17 and movesit out of locking position, Whereby the shutter gear is released andcapable of .running cti.

With its other lever arm the tension lever 76 is connected with adelayed-:action device 95 which as shown is disposed at the bottom `cithe carrier 2. The delayedaction device 95 essentially consists of asetting lever 96 with a bearing shaft 97 of which a crank disc 98 isfirmly connected Whose pin 99 act-uates a slide 100 which is subject tothe action of a spring `161. The slide 101i is guided by two bolts 162in slots .M13 of a sheet bar and with its wrapped part for-med as a rack104i by which a brake mechanism comprising driving gears 105, 166, 107,an anchor Wheel 19S and an anchor 1d@ receives its drive. Thedelayed-action device 9S possesses a multiarmed locking lever 110 arounda ulcrum 111, which is moved each time into locking position by a spring112. rl'he locking lever 110* is connected by a pin 113 with a two-armedlever 114 arranged about a bulcruum `115 and with its `other end locksor releases the movement of the anchor 109. The middle arm comesmoreover within a range of motion of a strap 116 secured to mack 164 andthereby moving the locking lever 11b out `of locking position.

4During release of the tension `lever 76 its end slides at first alongan incline 117 of the locking lever 11d and thereby moves the latter toan extent that the lever 113 releases anchor 109. Now the brake deviceis activated by the action of spring 101, but the locking lever 111D, inspite of it, still holds the tension lever 76 by means of its nose.Release from this locking position loccurs only When, in the course offurther running-off movement, the rack 10d with its strap 116 has movedthe tension lever 110' fully out of its locking position.

The return movement of lthe released tension lever 76 to its tensioningposition and also the return of the released minror 85 to its reliexposition take place simultaneously :at the setting yof the `gearing bythe high-speed lever 19, lever 76 being moved into the mentionedposition by a pin 118 secured to gear wheel 73 and mirror `85 beingmoved into its position by a driver '119 secured to Igear Wheel 74. Bythe shutter gear a counter may be actuated which is driven by a gearWheel 12b. rIlhe rays :coming from the lens 75 are passed by Way of themirror 85 to an image field lens 4121, and additional optical means maybe provided for viewing an upright and laterally reversed image.

A further locking device prevents actuation of the setting of the commondriving gear for shutter, film-feed mechanism and release of the mirrorand diaphragm unless the shutter has run out and is locked until thenext release. In accordance with this locking arrangement a controllever 122 cooperates with locking lever 17, turns about a fulcrum 123 ofa cover cap 124 and by the action of a spring 125 bears against thelocking lever 17. Lever 122 is connected with a member 126 having atangential face 127 and being located below the hollow high-speedsetting lever 19 so as to lie within its range of motion. Lever 19 has adownwardly drawn edge 123` corresponding to its form, said edge having arecess 129 within range of cont-rol member 125, the recess 12g being soarranged and shaped that the high-speed lever l19 during its movementstrikes member 126 in its position according to FIG. 17, whereby thesetting motion is locked or hindered. When the control member 126 is inthe position shown in FIG. 18, the setting motion is not interferedwith.

The locking arrangement operates as follows:

When the shutter is wound, the parts of the arrangement occupy theposition shown in FIGS. 14 to 17. Running-off of the shutter isprevented by the locking lever 17 which has also moved the adjacentcontrol lever 122 into a position Where its member 126 prevents movementof the high-speed setter. As in this position setting of the shuttergear and of the film-feed is not possible, no blanks can be formed, andthe situation is such that a release is necessary before setting cantake place. During this release effected by actuation of the lever 67its catch 79 releases the setting lever 76 which by the action of spring78 brings the mirror SS out of its reliex position. The mirror at theswing by the strapl 93 which strikes aga-inst the incline 9d of thelever 17 releases the latter so that the shutter can run off.Simultaneously With this motion the locking lever 17 turns thearticulated lever 122 Whose control member is thereby moved into aposition permitting the performance of the setting motion, during whichall functional members are returned to their initial position.

The invention is not restricted to the example of construction shown,but may be applied also to photographic cameras which do not possess areflex device or do not use a self-bedding diaphragm. When the inventionis applied to such cameras, the arrangement of the means for the reflexdevice and the release of the self-bedding diaphragm is, of course,omitted. In this simplied design the release of the shutter can beelfected also by forming the release lever 67 so as to serve also as alocking lever for the shutter Wheel 1li so that at its actuation theshutter wheel 10 is released and simultaneously also the B- setting iscontrolled. This mode of operation can be attained also by coupling thereleasing lever 67 with the locking lever 17.

We claim:

1. In a photographic camera having a housing, an objective lens in saidhousing, a iilm supply spool on one side of the optical axis of saidobjective lens and a lm takeup spool on the other side of said opticalaxis, said spools being adapted to support a Ifilm in the path of thelight passing through said objective lens, a focal-plane shutterincluding a pair of curtains movable across the face of said film, therst of said curtains being an opening curtain and the second of saidcurtains being a closing curtain, relleX means in said housing movableinto arid out of said optical axis, the improvement comprising drivegear means positioned adjacent one of said lilm spools and connected tosaid shutter, said reflex means, and said film takeup spool foroperatively driving said shutter, moving said reflex means and advancingsaid hlm, a settable, self-contained timing device in said housingadjacent said other film spool, and connecting means extending betweenand engageable with said drive gear means and said timing device forengaging said drive gear means in response to the setting of said timingdevice and preventing the operation of said second curtain after said:first curtain has exposed said flm, and for releasing said secondcurtain after a predetermined time in response to the action of saidtiming device so as to complete the exposure of said iilm.

2. IIn a photographic camera having a housing, an obl jective lens insaid housing, a shutter mechanism including two movable cuntains foradmitting light through said objective lens, a shutter wheel for each ofsaid curtains, recess means on one of said shutter wheels associatedwith theclosing curtain for receiving a locking member capable ofpreventing rotation of said one shutterwheel, spring actuated reex meansoperatively mounted in said housing and movable to a position which isin the path of the optical axis of said objective lens, iilm feedmechanism in said housing including a film supply spool mounted on oneside of said optical axis and a iilm talreup spool mounted on the otherside of said optical axis, the improvement comprising drive gear meanspositioned in -said housing adjacent one of said Vlilm spools on oneside of said optical axis for actuating said nlm feed mechanism, saidreflex means, and said shutter mechanism, a settable, self-containedtiming device including an escapement mechanism positioned in saidhousing adjacent the other of said lm spools on the other side of. saidoptical axis, and connecting means for establishing connection betweensaid drive gear means and said timing deviceV and including a two-armedlever pivotally mounted in said housing, one arm of said lever includinga locking claw extending into said recess means and thereby preventingrotation of said shutter wheel :according to a predetermined exposuretime, the other arm of said lever being connected and responsive to saidescapement mechanism.

3. In a photographic camera, the improvement as set forth in claim 2,further comprising means in said housing for effecting the B-setting andrelease of said shutter mechanism, said last-named means beingpositioned to lock said lever in the locking position.

4. fIn a photographic camera, the improvement as set forth in claim 3,wherein said means for effecting the B- setting includes a connectingarm releasably locking the movement of said lever, and a release leveroperatively connected to said shutter mechanism for disengaging saidconnecting arm from saidlever.

5. In a photographic camera, the improvement as set forth in claim 4,wherein said release lever is in engagement with a switching memberoperatively connected to said shutter mechanism, and thereby releasesthe same.

6. In a photographic camera, the improvement as set forth in claim 5,further comprising a plurality of adjustable thrust bolts operativelyconnected to said switching member for movement of said reiiex meansbetween a viewing and a taking position.

7. In a photographic camera, the improvement as set forth in claim 6,funther comprising a releasable delay action device mounted insaidhousing, said switching member being connected to said delay actiondevice fory time of adjustment of said delay action device.

8. In a photographic camera, the improvement as set `forth in claim 7,wherein said delay action device includes a plurality of adjustabledelaying gears rotatably mounted in said housing in meshing engagementwith each other, further comprising a locking lever pivotally mounted insaid housing in operative engagement with said delaying gears and saidswitching member, said locking lever when releasing said delaying gearslocking said switching member until the time interval set 'at thedelaying gears has elapsed and then releasing said switching member.

9. ln a photographic camera, the improvement as set forth in claim 2,further comprising return means mounted in said housing for returningsaid reux means to their initial position at the setting of said shuttermechanism and said lilm feed mechanism'by said drive gear means.

10; In a photographic camera, the improvement as set forth in claim 2,further comprising locking means in said housing for releasing thesetting of fthe drive gear means for said shutter mechanism, said filmfeed mechanism and said reflex means only after the runoff `of saidshutter mechanism.

11. In a photographic camera, the improvement as set forth in claim 10,wherein said locking means is controlled by the movement of said reflexmeans.

12. In a photographic camera, the improvement as set forth in claim 11,wherein said drive gear means is integral with said locking means. v

13. In a photographic camera, the improvement as set forth in claim 12,wherein said locking means includes a control member disposed within therange of the sett-ing movement and at release of said shutter mechanismby said locking member is moved into position, whereby said settingmovement is released.

14. ln a photographic camera, the improvement as set forth in claim 13,wherein said control member has a ,tangential surface which locks andreleases said setting movement.

15. In a photographic camera, the improvement as set forth in claim '14,further comprising a cover cap on said housing, said locking means beingmounted on said cover cap.

References Cited in the ile of this patent UNITED STATES PATENTS 734,692Fraley July 28, 1903 1,075,101 Heidecke Oct. 7, l1913 1,374,794 WolfApr. 12, 1921 1,381,241 Roberds June 14, 1921 1,980,546 Petit et al.Nov. 13, 1934 2,206,105 Mihalyi July 2, 1940 2,257,424 Meyer Sept. 30,1941 2,273,386 Steiner Feb. 17, 1942 2,298,787 -Fassin Oct. 13, 19422,392,071 Terrett et al. Jan. 1, 1946 2,504,011 Dunlap ,Apr.l 1l, 19502,608,921 Studdent Sept. 2, 1952 2,880,661 Kaden et al. Apr. 7, 1959FOREIGN PATENTS 25,849 Great Britain Q Nov. 30, 1908

1. IN A PHOTOGRAPHIC CAMERA HAVING A HOUSING, AN OBJECTIVE LENS IN SAIDHOUSING, A FILM SUPPLY SPOOL ON ONE SIDE OF THE OPTICAL AXIS OF SAIDOBJECTIVE LENS AND A FILM TAKEUP SPOOL ON THE OTHER SIDE OF SAID OPTICALAXIS, SAID SPOOLS BEING ADAPTED TO SUPPORT A FILM IN THE PATH OF THELIGHT PASSING THROUGH SAID OBJECTIVE LENS, A FOCAL-PLANE SHUTTERINCLUDING A PAIR OF CURTAINS MOVABLE ACROSS THE FACE OF SAID FILM, THEFIRST OF SAID CURTAINS BEING AN OPENING CURTAIN AND THE SECOND OF SAIDCURTAINS BEING A CLOSING CURTAIN, REFLEX MEANS IN SAID HOUSING MOVABLEINTO AND OUT OF SAID OPTICAL AXIS, THE IMPROVEMENT COMPRISING DRIVE GEARMEANS POSITIONED ADJACENT ONE OF SAID FILM SPOOLS AND CONNECTED TO SAIDSHUTTER, SAID REFLEX MEANS, AND SAID FILM TAKEUP SPOOL FOR OPERATIVELYDRIVING SAID SHUTTER, MOVING SAID REFLEX MEANS AND AND ADVANCING SAIDFILM A SETTABLE, SELF-CONTAINED TIMING DEVICE IN SAID HOUSING ADJACENTSAID OTHER FILM SPOOL, AND CONNECTING MEANS EXTENDING BETWEEN ANDENGAGEABLE WITH SAID DRIVE GEAR MEANS AND SAID TIMING DEVICE FORENGAGING SAID DRIVE GEAR MEANS IN RESPONSE TO THE SETTING OF SAID TIMINGDEVICE AND PREVENTING THE OPERATION OF SAID SECOND CURTAIN AFTER SAIDFIRST CURTAIN HAS EXPOSED SAID FILM, AND FOR RELEASING SAID SECONDCURTAIN AFTER A PREDETERMINED TIME IN RESPONSE TO THE ACTION OF SAIDTIMING DEVICE SO AS TO COMPLETE THE EXPOSURE OF SAID FILM.